LEWISBURG — A Union County man has been found guilty of multiple charges in connection with the sexual assault of a girl in a Lewisburg hotel when she was 14 and 15.A jury deliberated about 90 minutes on Wednesday before finding Timothy Alan Dowhower, 45, of Mifflinburg, guilty of counts that included aggravated indecent and indecent assault, corruption of minors, sexual extortion, unlawful contact with a minor, child endangerment and corruption…